"They do exist in the vicinity. Whether that was a contributor to the incident, we don't know," said Jason Biggs, operations manager for the Washington State Department of Transportation rail division.
Amtrak train derailed on special section of track →
"I made a political tweet, so I got a little bit of heat from the right," he said.
Tuning in to TV: HBO’s ‘The Newsroom’ casts recurring roles →